Secondary Textures appear white when sampling them from the Sprite Atlas in Tilemaps in a Shader

Reproduction steps:
1. Open the attached “ASDQWE” project
2. Open the “Assets/Scenes/testSceneForBugReporting.unity” Scene
3. Enter the Play Mode
4. Observe the upper textures in the Game View

Expected results: The textures are yellow
Actual result: The textures are white

Reproducible with: 2023.1.15f1, 2023.2.0b11, 2023.2.0a7
Could not test with: 2021.3.30f1 (Multiple “error CS1061: 'Sprite' does not contain a definition for 'GetSecondaryTextureCount'“ errors and “error CS1501: No overload for method 'Create' takes 9 arguments” compilation error), 2022.3.10f1 (Assets could not migrate correctly)

Reproducible on: Intel macOS 13.5
Not reproducible on: No other environment tested

Notes:

• The issue is not reproducible if Tilemap Renderer Mode is set to “Chunk”
• The issue is not visible in the Scene View